136743984 has 120 divisors (see below), whose sum is σ = 425248080. Its totient is φ = 42052608.

The previous prime is 136743977. The next prime is 136744031. The reversal of 136743984 is 489347631.

136743984 is a `hidden beast` number, since 136 + 7 + 439 + 84 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 72072 + ... + 73944.

It is an arithmetic number, because the mean of its divisors is an integer number (3543734).

Almost surely, 2^136743984 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 136743984, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (212624040).

136743984 is an abundant number, since it is smaller than the sum of its proper divisors (288504096).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

136743984 is a wasteful number, since it uses less digits than its factorization.

136743984 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1916 (or 1891 counting only the distinct ones).

The product of its digits is 435456, while the sum is 45.

The square root of 136743984 is about 11693.7583351119. The cubic root of 136743984 is about 515.1923547018.

The spelling of 136743984 in words is "one hundred thirty-six million, seven hundred forty-three thousand, nine hundred eighty-four".